Acta Optica Sinica, Volume. 31, Issue 1, 101003(2011)
Numerical Simulation of a Prediction Control Algorithm for Close-Loop Adaptive Optical System
To reduce the servo lag error in adaptive optics system which corrects the atmosphere turbulence distortion, a prediction control algorithm to predict the control voltage of deformable mirror is proposed. The prediction control method with recursive least-square (RLS) algorithm is used to predict the voltage of deformable mirror in advance. Numerical simulation, based on the atmospheric turbulence distorted wave-front slope data changing with different transversal wind is studied. The residual error of the adaptive optics system is calculated and compared with the prediction control algorithm and proportional integral (PI) control algorithm. The results show that the residual error caused by servo lag in the system is reduced more effectively by using the prediction control algorithm than by using the PI control algorithm.
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Yan Zhaojun, Li Xinyang, Rao Changhui. Numerical Simulation of a Prediction Control Algorithm for Close-Loop Adaptive Optical System[J]. Acta Optica Sinica, 2011, 31(1): 101003
Category: Atmospheric Optics and Oceanic Optics
Received: May. 11, 2010
Accepted: --
Published Online: Dec. 24, 2010
The Author Email: Zhaojun Yan (yzhaojun55@126.com)